.nav {
    /* 定宽度版心 */
    width: 1100px;
    height: 110px;
    /* 设置margin左右auto */
    margin: 0 auto;
    /* background-color: red; */
}

/* logo */
.nav .logo {
    float: left;
    width: 169px;
    height: 64px;
    background: url(../images/logo.png) no-repeat;
    margin-top: 20px;
}

/* 导航文本的内容 */
.nav .nav_con {
    float: left;
    height: 64px;
    margin-left: 120px;
}

.nav .nav_con li {
    float: left;
    width: 110px;
    height: 110px;
    /* background-color: #666; */
    line-height: 110px;
    text-align: center;
}

/* 设定活性的样式 */
.nav .nav_con .active {
    font-weight: 700;
}

/* 广告内容 */
.banner {
    width: 100%;
    height: 500px;
    background: url(../images/banner.jpg) no-repeat center;
}

/* 内容展示 */
.container {
    width: 1100px;
    margin: 50px auto;
}


.container div {
    float: left;
    width: 33%;
    height: 200px;
    text-align: center;
    line-height: 25px;
}

.container .item2 {
    margin: 0 0.5%;
}

.category {
    width: 1100px;
    height: 850px;
    margin: 0px auto;
    /* border: 1px solid red; */
    text-align: center;
    line-height: 35px;
}

.category p {
    color: #ccc;
}

/* 设置文字的间距 */
.category .text_dis {
    letter-spacing: 6px;
}

.category_title {
    margin-bottom: 20px;
}

/* 分类的产品 */
.category_product {
    margin: 0 auto;
}

.category_product .product_item {
    width: 280px;
    height: 340px;
    margin: 0 43px;
    text-align: left;
    line-height: 23px;
    float: left;
}

.product_item .item_keywords {
    font-size: 14px;
    margin: 5px 0 15px;
    line-height: 18px;
    height: 37px;

}

.product_item .more {
    color: #ccc;
    border: 1px solid #ccc;
    font-size: 14px;
    width: 80px;
}

.foot {
    height: 60px;
    background-color: #eee;
    line-height: 60px;
    text-align: center;
}